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Proceedings Paper

Workpiece angle measurement based on Hough transform
Author(s): Fuzhong Bai; Changhui Rao; Zhen Liu
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Paper Abstract

To overcome the difficulty in the non-contact angle measurement especially for large-scaled workpieces, the paper presents a new angle measurement method based on Hough transform. The realization process of the method consists of workpiece image acquisition & preprocessing and angle measurement. With the preprocessing one can obtain an ideal binarized edge image of the workpiece image. The angle measurement is then carried out by employing the classical Hough transform. Except the discussion of measurement principle, both practical examples and simulated experiments are introduced to demonstrate the performance of the method proposed in the paper. The experiment results indicate that this method can be applied to measure the workpiece angle under many occasions and can achieve the aim of the non-contact angle measurement. At the same time, it does still possess great advantages in terms of reliability and noise rejection capability.

Paper Details

Date Published: 31 December 2008
PDF: 6 pages
Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 71303W (31 December 2008); doi: 10.1117/12.819699
Show Author Affiliations
Fuzhong Bai, Institute of Optics and Electronics (China)
Graduate School of the Chinese Academy of Sciences (China)
Inner Mongolia Univ. of Technology (China)
Changhui Rao, Institute of Optics and Electronics (China)
Zhen Liu, Inner Mongolia Univ. of Technology (China)

Published in SPIE Proceedings Vol. 7130:
Fourth International Symposium on Precision Mechanical Measurements
Yetai Fei; Kuang-Chao Fan; Rongsheng Lu, Editor(s)

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